BTS DATA COMPLETE THROUGH JUNE 2026HISTORICAL ODDS · NOT LIVE FLIGHT STATUS
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STL→ORD

American Airlines St. Louis, MO (STL) to Chicago, IL (ORD) reliability

Among 533 scheduled American Airlines flights from STL to ORD, 78.6% arrived on time, 13.7% arrived at least 30 minutes late, and 2.4% were cancelled during July 2025–June 2026.

Source: U.S. Bureau of Transportation Statistics · Marketing carrier: American Airlines (AA) · Updated September 16, 2026

HISTORICAL ROUTE SIGNALGenerally reliable
78.6%arrived on time
13.7%30+ min late
2.4%cancelled
533scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
30+ minutes late13.7%
60+ minutes late8.8%
Cancelled2.4%
Average arrival+14.3 mincompleted flights

What did American Airlines STL to ORD record?

American Airlines completed 97.4% of its scheduled reportable STL to ORD flights in the observation window. 78.6% of all scheduled flights arrived less than 15 minutes late, while 8.8% arrived at least an hour late.

What were American Airlines STL to ORD disruption rates?

For American Airlines STL-to-ORD flights, 13.7% arrived at least 30 minutes late, 2.4% were cancelled, and 0.2% were diverted.

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What was the American Airlines STL to ORD scheduled cohort?

The American Airlines STL-to-ORD cohort contained 533 scheduled flights; 519 completed, 13 were cancelled, and 1 were diverted.

Not a prediction.

This is a descriptive historical rate. Schedule changes, seasonal operations and current conditions may differ.